11-10-13 In a literal walk through time along the Ucayali River near Contamana, Peru, a team of researchers found rodent（啮齿动物） fossils at least 41 million years old -- by far the oldest on the South American continent. The remains -- teeth -- showed th...

11-10-10 Cultivars（栽培品种） of popular ornamental woody plants that are being sold in the United States as non-invasive are probably anything but（根本不） , according to an analysis by botanical（植物学的） researchers published in the October issue of B...

11-09-22 Research at the University of Liverpool has found that periods of rapid fluctuation in temperature coincided with the emergence of the first distant relatives of human beings and the appearance and spread of stone tools. Dr Matt Grove from the Schoo...

11-09-15 Did an ancient crocodile relative give the world's largest snake a run for its money? In a new study appearing Sept. 15 in the journal Palaeontology, University of Florida researchers describe a new 20-foot extinct species discovered in the same Col...

11-09-07 Two once-widespread woodland species of British birds have been put on the endangered list after a steep decline in their numbers. 两种曾经在英国普遍分布的林地鸟类因数量急剧下降而被列入濒危物种。 The lesser spotted woodpecker is now one of 103 speci...

11-08-24 Eight million, seven hundred thousand species (give or take 1.3 million). That is a new, estimated total number of species on Earth -- the most precise calculation ever offered -- with 6.5 million species found on land and 2.2 million (about 25 perc...

11-08-20 As biodiversity declines worldwide, there is concern that this will lead to declines in the services that ecosystems provide for people, such as food production, carbon storage, and water purification. But until now it has been unclear, whether just...

11-08-19 New research by scientists in the Department of Biology at the University of York shows that species have responded to climate change up to three times faster than previously appreciated. These results are published in the latest issue of the leadin...

11-06-28 A revolutionary species-preservation approach based on whole-genome analyses of two Tasmanian devils（袋獾） -- one that had died of a contagious（感染性的） cancer known as Devil Facial Tumor Disease (DFTD) and one healthy animal -- has been used t...

11-06-22 If you think yeast is most useful for beer and pizza crust（外壳，面包皮） , here's something else to chew on: a team of U.S. researchers has identified and compared the genetic codes for all known species of yeasts closely related to bakers' and br...